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数学
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若分式1/(1+1/(x+1))有意义,试确定x的取值范围
要过程,谢谢啦
人气:481 ℃ 时间:2020-02-05 15:11:22
解答
x+1≠0
x≠-1
1+1/(x+1)≠0
1/(x+1)≠-1
-x-1≠1
x≠-2
所以x≠-1且x≠-2
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